“Normal” meaning I think the US format, the format that confuses a lot of people elsewhere. YYYY-MM—DD is the safest, but in the UK at least we would interpret xx-xx as DD-MM
If you wanted to celebrate, but all the restaurants are booked, tell them you are quite flexible. Tomorrow (12/3/21), or during the weekend is fine too. And all the weekdays next week. Just make sure you get that reservation before next Friday (12/9/21).
wondered just how widespread this would be accepted and got down a rabbit hole of international standards ISO-8601 etc and surprisingly (so often are ppl at odds around the world about this) it's pretty universal this one!
